Algorithm (Procedure Variants) for the Calculation of Solubility Diagrams of Quasi-Simple Multicomponent Water-Electrolyte Systems

Charykov N.A. Rumyantsev A.V. Keskinov V.A. Letenko D.G. Charykova M.V. Keskinova M.V.
14 November 2024 American Chemical Society

Journal of Chemical and Engineering Data
2024 #69 Issue 11 4089 - 4097 pp.

This paper is devoted to the consideration of isotherm-isobaric solubility diagrams of quasi-simple systems. Quasi-simple systems are multicomponent systems in which the lines (surfaces, hypersurfaces) of constancy solvent activity are characterized by a linear interdependence of the variables of the composition of liquid solutions. The specific type of dependence of the incomplete Gibbs potential on the composition variables for such systems is determined. A universal algorithm for the calculation of isotherm-isobaric solubility diagrams of these systems, independent of the valence type of the electrolyte, the number of components of the system, and the types of solid phases, which is also extended to systems with solid solutions formed, is presented. The results of nonmodel thermodynamic calculations of solubility diagrams are in convincing agreement with experimental data available in the literature.

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Saint-Petersburg State Technological Institute (Technical University), Moskovskii pr., 26, St. Petersburg, 190013, Russian Federation
East Kazakhstan State Technical University, Center Veritas, A. K. Protozanov str., 69, Ust-Kamenogorsk City, 070004, Kazakhstan
The First Electrotechnical University LETI, Professora Popova Str., 5, St. Petersburg, 197376, Russian Federation
Saint-Petersburg State University of Architecture and Civil Engineering, Second Krasnoarmeiskaya str., 4, St. Petersburg, 190005, Russian Federation
Saint-Petersburg State University, Universitetskaya emb,. 7-9, St. Petersburg, 199034, Russian Federation

Saint-Petersburg State Technological Institute (Technical University)
East Kazakhstan State Technical University
The First Electrotechnical University LETI
Saint-Petersburg State University of Architecture and Civil Engineering
Saint-Petersburg State University

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